MICOM-3F/3T/3R HF-SSB Owner’s Guide
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Figure 21. Fitting Radio onto Mounting Tray
Step 3.
Use the tie straps included with Cable Kit to tie loose cables out of the way.
Step 4.
Connect a ground lead from the GND screw on the radio body to the mobile chassis.
Important
Special attention should be given to locating a good vehicle ground.
Optimum radio performance can only be achieved with a ground
connection having a very low resistance. The vehicle frame makes the best
ground, but body structural reinforcement members are also suitable for
grounding purposes. The ground lead should be as short as possible.
Step 5.
If desired, plug an external speaker into the accessories connector. Any speaker with
an impedance greater than 8 ohms can be used.
External Speaker Installation for MICOM-3F
Connect the external speaker (8
Ω
, 8W) to the accessories connector (pins 1, 3). The external speaker
is connected in parallel to the internal speaker.
To disconnect the internal speaker, perform the following steps:
Step 1.
Insert a
small
, flat-blade screwdriver in the slotted area on the right hand-side panel
of the radio and press the screwdriver towards you, to release the control head.
Figure 22. Opening the MICOM-3F Control Head
Step 2.
Disconnect the internal speaker from the board.
